Run Program Activity issue with Server 2008

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Update 9/7/2012
The issue lies at the OS level w/ the UAC settings.  The changes reflect the differences from 2008 to 2008 R2....
i.e. 
Run all administrators in Admin Approval mode
Behavior of the elevation prompt for administrators in admin approval mode
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Update 8/30/2012
This appears to only happen when using alternate credentials in the "Run As" field.  I've also repro'd this back in Opalis, so it's not something w/ the updated Run Program activity in SCOrch.  More troubleshooting to come....
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Yesterday I came across an issue w/ the Run Program standard activity.  I have installed the RU2 hotfix release late in July to resolve the issue running the activity against Server 2003/2008/2008SP2.

The activity does run "successfully" in the console.  However, it does not seem to be running the specified command or program in an elevated UAC session.

Pure Output from running "ipconfig /flushdns" via Run Program on a 2008 server:

The requested operation requires elevation.


While expected behavior on a 2008 R2 server:
Windows IP Configuration

Successfully flushed the DNS Resolver Cache.


 I've also posted the question to the TechNet forums to see if this is a known issue since RU2.
http://social.technet.microsoft.com/Forums/en-US/scogeneral/thread/b03cb650-4abc-44a6-a097-9c1bf4d979a9